US11794754B2 - Vehicle and method of controlling the same - Google Patents
Vehicle and method of controlling the same Download PDFInfo
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- US11794754B2 US11794754B2 US17/389,784 US202117389784A US11794754B2 US 11794754 B2 US11794754 B2 US 11794754B2 US 202117389784 A US202117389784 A US 202117389784A US 11794754 B2 US11794754 B2 US 11794754B2
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Abstract
Description
TABLE 1 | ||
driving | speed | driving state entry condition and driving state release |
state | section | condition |
straight | normal | 1) |steering angle| < first threshold |
state | speed (flat) | 2) |steering angular velocity| < second threshold |
3) number of gear stages = D (drive) | ||
4) □ (FL wheel speed + FR wheel speed + RL wheel | ||
speed + RR wheel speed) < third threshold | ||
(FL: left front wheel, FR: right front wheel, RL: left rear | ||
wheel, RR: right rear wheel) | ||
5) fourth threshold < FL wheel speed + FR wheel speed + | ||
RL wheel speed + RR wheel speed < fifth threshold | ||
driving state entry condition: when all conditions 1), 2), 3), | ||
4) and 5) are satisfied for more than a certain time, it is | ||
determined as straight state | ||
driving state release condition: when all conditions 1), 2), | ||
3), 4) or 5) are not satisfied for more than certain time, it is | ||
determined as straight state release | ||
turning | low speed | 1) |steering angle| > first threshold |
state | (static) | 2) |steering angular velocity| < second threshold |
3) FL wheel speed + FR wheel speed + RL wheel speed + | ||
RR wheel speed < fourth threshold | ||
4) □ (FL wheel speed + FR wheel speed + RL wheel | ||
speed + RR wheel speed) < third threshold | ||
driving state entry condition: when all conditions 1), 2) and | ||
3) are satisfied for more than certain time, it is determined | ||
as turning state | ||
driving state release condition: when all conditions 1), 2) or | ||
3) are not satisfied for more than certain time, it is | ||
determined as turning state release | ||
stop | stop | 1) |longitudinal acceleration| + |transverse acceleration| + |
state | |vertical acceleration| < sixth threshold | |
2) |yow rate| + | roll rate| + |pitch rate| < seventh threshold | ||
3) Number of gear stages = P (parking) | ||
4) FL wheel speed + FR wheel speed + RL wheel speed + | ||
RR wheel speed < fourth threshold | ||
5) braking pressure > eighth threshold | ||
driving state entry condition: when all conditions 1), 2), 3) | ||
and 4) are satisfied for more than certain time or, when all | ||
conditions 1), 2), 4) and 5) are satisfied for more than | ||
certain time, it is determined as stop state. | ||
driving state release condition: when all conditions 1), 2) or | ||
4) are not satisfied for more than certain time period, it is | ||
determined as the stop state release | ||
non- | low speed | mobile terminal and television receiver connect directly |
overturning | wirelessly (paragraph 26) | |
state | 1) roll rate < ninth threshold | |
2) transverse acceleration < tenth threshold | ||
3) vertical acceleration < eleventh threshold | ||
4) longitudinal acceleration < 12th threshold | ||
5) |(FL wheel speed + RL wheel speed) − (FR wheel speed + | ||
RR wheel speed)| < 13th threshold | ||
6) pitch rate < 14th threshold | ||
driving state entry condition: when all conditions 1), 2), 3), | ||
4), 5) and 6) are satisfied for more than certain time, it is | ||
determined as non-overturning state | ||
driving state release condition: when all conditions 1), 2), | ||
3), 4), 5) or 6) are not satisfied for more than certain time, it | ||
is determined as non-overturning state release | ||
TABLE 2 | ||
driving | offset | |
state | identification | offset reliability identification |
straight | 1) transverse | 1) offset reliability of longitudinal acceleration = |expected |
state | acceleration | value of longitudinal acceleration − measured longitudinal |
offset value = | acceleration|/(expected value of longitudinal acceleration) * | |
measured | 100 (%) | |
transverse | 2) offset reliability of vertical acceleration = |expected | |
acceleration | value of vertical acceleration − measured vertical | |
value | acceleration|/(expected value of vertical acceleration) * | |
100 (%) | ||
expected value of longitudinal acceleration = □ (FL | ||
wheel speed + FR wheel speed + RL wheel speed + RR | ||
wheel speed)/4 | ||
expected value of vertical acceleration = Σ (pitch rate + | ||
roll rate)/factor | ||
factor: any predetermined value or tuning parameter | ||
turning | 1) longitudinal | 1) offset reliability of transverse acceleration = |expected |
state | acceleration | value of longitudinal acceleration − measured transverse |
offset value = | acceleration|/(expected value of transverse acceleration) * | |
measured | 100 (%) | |
longitudinal | 2) yaw rate offset reliability = |yaw rate expected value − | |
acceleration | measured yaw rate|/(rate expected value) * 100 (%) | |
value | expected value of transverse acceleration = (FL wheel | |
speed + FR wheel speed + RL wheel speed + RR wheel | ||
speed)/4 * yaw rate | ||
yaw rate expected value = transverse acceleration/(FL | ||
wheel speed + FR wheel speed + RL wheel speed + RR | ||
wheel speed)/4) | ||
stop | 1) yaw rate | |
state | offset value = | |
measured | ||
yaw rate | ||
value | ||
2) roll rate | ||
offset value = | ||
measured roll | ||
rate value | ||
3) pitch rate | ||
offset value = | ||
measured | ||
pitch rate | ||
value | ||
4) vertical | ||
acceleration | ||
offset value = | ||
measured | ||
vertical | ||
acceleration | ||
value | ||
non- | 1) roll rate offset reliability = 1/|measured roll rate| | |
overturning | 2) pitch rate offset reliability = 1/|measured pitch rate| | |
state | roll rate expected value = 0 | |
pitch rate expected value = 0 | ||
TABLE 3 | ||||||||
Normal + | Normal + | Normal + | Normal + | Normal + | Normal + | |||
Normal | 1α | 2α | 3α | 4α | 5α | 6α | ||
straight | 0 | ±1 LBS | ±2 LBS | ±3 LBS | ±4 LBS | ±5 LBS | ±6 LBS | |
state | per | per | per | per 10 | per 10 | per | ||
10 |
10 |
10 | sec | sec | 10 sec | |||
turning | 0 | 0 | ±1 LBS | ±2 LBS | ±3 LBS | ±4 LBS | ±5 LBS | |
state | per | per | per 10 | per 10 | per | |||
10 |
10 | sec | sec | 10 sec | ||||
stop | ±1 LBS | ±2 LBS | ±3 LBS | ±4 LBS | ±5 LBS | ±6 LBS | ±7 LBS | |
state | per 10 | per | per | per | per 10 | per 10 | per | |
|
10 |
10 |
10 | sec | sec | 10 sec | ||
TABLE 4 | ||||||||
Normal + | Normal + | Normal + | Normal + | Normal + | Normal + | |||
Normal | 1α | 2α | 3α | 4α | 5α | 6α | ||
straight | 0 | 0 | ±1 LBS | ±2 LBS | ±3 LBS | ±4 LBS | ±5 LBS | |
state | per | per | per 10 | per 10 | per | |||
10 |
10 | sec | sec | 10 sec | ||||
turning | 0 | ±1 LBS | ±2 LBS | ±3 LBS | ±4 LBS | ±5 LBS | ±6 LBS | |
state | per | per | per | per 10 | per 10 | per | ||
10 |
10 |
10 | sec | sec | 10 sec | |||
stop | ±1 |
0 | 0 | ±1 LBS | ±2 LBS | ±3 LBS | ±4 LBS | |
state | per 10 | per | per 10 | per 10 | per | |||
|
10 | sec | sec | 10 sec | ||||
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